DEFLECTION VOLTAGE SUPPLY CIRCUIT FOR IMAGE DISPLAY APPARATUS

PURPOSE: A deflection voltage supply circuit for an image display apparatus is provided to simplify the circuit implementation. CONSTITUTION: A deflection voltage supply circuit for an image display apparatus includes a DC/DC converter(230), a horizontal output unit(240), a screen distortion compens...

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Bibliographische Detailangaben
1. Verfasser:	SONG, GEUN SU
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY PICTORIAL COMMUNICATION, e.g. TELEVISION
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	PURPOSE: A deflection voltage supply circuit for an image display apparatus is provided to simplify the circuit implementation. CONSTITUTION: A deflection voltage supply circuit for an image display apparatus includes a DC/DC converter(230), a horizontal output unit(240), a screen distortion compensator(250), and a horizontal center compensator(260). The DC/DC converter(230) applies AC waveform voltage(VB) to a dummy flyback transformer(DFBT) by using a pulse injection method. The horizontal output(240) operates responding to a horizontal synchronous signal(HD), and switches the current through the dummy flyback transformer(DFBT). The screen distortion compensator(250) feedbacks the voltage accumulated in a vertically deflection coil to an output terminal of the DC/DC converter(230). The horizontal center compensator(260) adjusts the deflection center voltage applied on the vertical deflection coil by using the output voltage of the DC/DC converter.